What else did Mr Kim say?

He thanked the South for "specially prioritising" the North's attendance at the Games, North Korean state news agency KCNA reports.

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Ms Kim's visit has been one of the most talked-about aspects of the Games

He also gave "important instructions" on how to "liven up" the "warm climate of reconciliation and dialogue".

A picture released by the agency shows Mr Kim flanked by his sister and the North's ceremonial head of state, Kim Yong-nam, both linking arms with him.

How big a propaganda coup has the North scored?

Ms Kim and Mr Kim Yong-nam made up the most senior delegation from the North to visit the South since the Korean War in the 1950s.

The two states have never signed a peace treaty and are in a constant state of mutual distrust.

On Saturday, Ms Kim handed over a letter from her brother to President Moon, inviting him to visit Pyongyang. If the summit goes ahead, it will be the first meeting in more than a decade between Korean leaders.